Face up to any weather in this heated 30seven® baselayer. Light and comfortable enough next to your skin. Heated with the innovative Novaheat® heating element, powered by two rechargeable lithium-ion batteries with integrated operating button and four heating levels. The Novaheat® heating element is washable and can be removed for use in other 30seven® clothing. The baselayer takes up almost no space when folded, so it’s easy to carry.